Wagon construction



Jan. 8, 1929. 1,698,642

F. A. M NAB WAGON CONSTRUCTION Filed March 10, 1928 INVENTOR )ECAMACAQBWY Q ATTORNEY Patented Jan. 8, 1929..

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nn'eneis A. Multan, or onemsv, cam ras.

I WAGON CONSTRUCTIUH.

Application filed March 1928. I Serial No. 260,583.

This invention relates to 'in'iprovements in V wagon constructions, andit consists or the combinations and arrangements herein described andclaimed. 7

An object of the invent-ionisto improve the reach bar of wagons, towhich end the reach head of each reach bar is so designed as to not onlyafi'ord maximum strength for a vulnerable point, but also provide theutmost freedom of movement of the reach bar in characteristicdirections. 7

Other objects and advantages appear in the following specification,reference being had to the accompanying drawing in which,

Figure 1 is a plan View of a agon reach assembly, particularlyillustrating the improved reach head,

Figure 2 is a perspective view of an end of the reach bar, again showingthe reach head,

Figure 3 is a plan View of the reach head,

Figure 4: is a longitudinal section taken on the line H of Figure 1,

Figure 5 is a cross section taken on the line 5-5 of Figure 3,

Figure 6 is a detail section illustrating the latitude of rockingmovement of the reach head without binding upon the king bolt.

Reference may be made to the Patent No. 1,588,323, granted for a wagonconstruction on June 8, 1926, to Francis A. MacNab, the purpose of suchreference being to afford a comparison of the reach head disclosedtherein with the improved reach head which is the subject of the presentapplication. It is deemed unnecessary to make a con'iparison of eachdetail, for the present improvements of the reach head in the patentwill speak for themselves.

Any one familiar with the use of a farm wagon, to which the invention isdedicated, knows that the riding of the four wheels over an interruptedsurface sets up great strains that are largely centered upon the kingbolt. The necessity of providing for side rocking motion in addition tohorizontal pivotal motion of the reach bar has not escaped the attentionof prior patentees. However, the lack of a well designed head hasdefeated the meritorious introduction of this important adjunct to reachbars so that common practice is largely confined to a mere hole in thereach bar into which the king bolt is inserted.

First of all it is proposed to employ a. tubular reach bar 1. Into oneend of this reach bar is inserted the closely fitting cylindrical shank2 of the improved head that is generally designated 3. Theemployment-ofspot} welding as indicated by the'points 4c in F igures 2and 4:, makes a. union between the two elements that is absolutelyinseparable even during abuse of the assembly:

, firs clearly seen in Figures 2 and 3,

tremities of this slot taper to the point of I .the headi ,8 sadequately enlarged to permit the cutting 0t an ample lateral slot 5.The lateral exmergenee with a hole 6 (usually round) for the king bolt7. That part of the head 3 in which the hole 6 occurs is relatively thinat diametrically opposite points 8. However, the points of greatestthinness are confined to diai'netrically oppositepoints in the directionof the slot 5 thus affording destructive portions that may in time beworn away by incessant action upon the king bolt as suggested in Figure6.

The top 9 of the head 3 is flattened. The

under side is flattened also, but the longitudinal portions are roundedat 10 upon such well defined arcs that the general aspect of the pnderside of the head is that of a round surace.

As amatter of fact, ample rounding is'desirable, thereby permitting amost pronounced lateral rocking of the head in either direction inrespect to the king bolt 7 without imposing any undue strain either uponthe king bolt or upon the rear portions of the wagon assembly. The frontcorners of the head are rounded at 11. The upper edges of the head arebevelled at 12. One purpose of the rounding and bevelling is to avoidsharp corners and edges. Another purpose of the bevels 12 is to efi'ecta greater extent of side rocking of the head, before-contact is madewith the sand board of the front wagon bolster, neither of which isshown.

An outstanding feature of the improved reach head 18 the great treedomof movement I of the head between the sand board and "front head. Thereach head is; made'in one piece,

and the necessary operations thereupon can be reduced to a minimum. Theassembly of the reach head With the reach bar ends with the mereinsertion of the shank and the Weld- 5 ing of a sufficient number ofplaces.

While the construction and arrangement of the improved reach head isthat of a generally preferred form, obviously modifica tions and changesmay be made Without departing from the spirit of the invention or thescope of the claims.

I claim 1. An article of manufacture comprising a shank having anintegral expanded head thinner but broader than the shank, that isflattened on the top and under sides,'the longitudinal portions of theunderside being fully rounded to facilitate lateral rocking, thelongitudinal edges of the top side being bevelled to afford agreaterextent of rocking movement beneath the sand board of a Wagon gear, saidhead having a king bolt opening.

2. An article of manufacture comprising a cylindrical shank insertableinto a tubular reach bar and having an end expanded to form a reach headto be located beyond the adjacent extremity of said reach bar, said headhaving a kingbolt opening. 7

Signed at Denver in the county of Denver and State of Colorado, this17th day of February A. D. 1928.

FRANCIS A. MAGNAB.

